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v3.19.1

Regulatory Assets and Liabilities (Tables) | 12 Months Ended
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Dec. 31, 2018
Regulatory Assets and Liabilities Disclosure [Abstract] |
Schedule Of Regulatory Assets and Liabilities [Table Text Block] |
As at |  | December 31 |  | December 31
millions of Canadian dollars |  | 2018 |  | 2017
Regulatory assets |  |  |  |
Deferred income tax regulatory assets | $ | 775 | $ | 667
Pension and post-retirement medical plan (1) |  | 453 |  | 380
Cost recovery clauses |  | 75 |  | 17
Environmental remediations |  | 31 |  | 41
Hurricane Matthew restoration |  | 28 |  | 28
Stranded cost recovery |  | 28 |  | 25
Unamortized defeasance costs |  | 26 |  | 32
Demand side management ("DSM") deferral |  | 24 |  | 28
Deferrals related to derivative instruments |  | 10 |  | 15
Storm reserve |  | 4 |  | 59
Other |  | 115 |  | 119
| $ | 1,569 | $ | 1,411
Current | $ | 165 | $ | 138
Long-term |  | 1,404 |  | 1,273
Total regulatory assets | $ | 1,569 | $ | 1,411
Regulatory liabilities |  |  |  |
Deferred income tax regulatory liabilities |  | 1,218 |  | 1,116
Accumulated reserve - cost of removal |  | 955 |  | 894
Regulated fuel adjustment mechanism |  | 161 |  | 177
Deferrals related to derivative instruments |  | 116 |  | 182
Storm reserve |  | 76 |  | -
Cost recovery clauses |  | 30 |  | 51
Self-insurance fund (note 31) |  | 30 |  | 28
Other |  | 24 |  | 20
| $ | 2,610 | $ | 2,468
Current | $ | 251 | $ | 226
Long-term |  | 2,359 |  | 2,242
Total regulatory liabilities | $ | 2,610 | $ | 2,468
(1) The December 31, 2017 pension and post-retirement medical plan regulatory asset includes a prior period reclassification of $35 million from AOCI, for changes in unrecognized pension and post-retirement benefit costs to be consistent with current year presentation. Refer to note 10 for further details.

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